公开(公告)号：US20090243982A1

公开(公告)日：2009-10-01

申请号：US12266323

申请日：2008-11-06

申请人： Young-Keun Lee ,  Gi-Cheri Kim ,  Byung-Choon Yang ,  Jeom-Oh Kim

发明人： Young-Keun Lee ,  Gi-Cheri Kim ,  Byung-Choon Yang ,  Jeom-Oh Kim

IPC分类号： G09G3/36

CPC分类号： G09G3/3406 ,  G09G2320/064 ,  G09G2320/0646

摘要： A backlight unit assembly, a liquid crystal display having the same, and a dimming method thereof are provided. The dimming method for a liquid crystal display includes setting a plurality of lookup tables, each lookup table having different data for adjusting luminance corresponding to a same grayscale, calculating a grayscale average of a whole liquid crystal display panel and grayscale averages of individual liquid crystal display panel blocks with respect to an image signal input to the liquid crystal display panel, selecting one of the plurality of lookup tables in accordance with the whole grayscale average, and calculating the data for obtaining the luminance corresponding to the individual grayscale averages in the selected lookup table, and adjusting and applying power to a light emitting diode assembly using the calculated data. In the case of displaying an image, which is dark on the whole and only a part of which is bright, power is applied with a wider pulse width at the same grayscale, and thus the image can be displayed with a desired luminance to minimize image distortion.

摘要翻译： 提供背光单元组件，具有该背光单元组件的液晶显示器及其调光方法。 用于液晶显示器的调光方法包括设置多个查找表，每个查找表具有不同的数据，用于调整对应于相同灰度的亮度，计算整个液晶显示面板的灰度平均值和各个液晶显示器的灰度平均值 面板块相对于输入到液晶显示面板的图像信号，根据整个灰度平均选择多个查找表中的一个，并且计算用于获得与所选查询中的各个灰度平均值相对应的亮度的数据 表格，并使用计算的数据调整和向发光二极管组件施加电力。 在显示整体上暗且仅部分亮的图像的情况下，以相同灰度的宽脉冲宽度施加功率，因此可以以期望的亮度显示图像以最小化图像 失真。

公开(公告)号：US08400394B2

公开(公告)日：2013-03-19

申请号：US12266323

申请日：2008-11-06

申请人： Young-Keun Lee ,  Gi-Cheri Kim ,  Byung-Choon Yang ,  Jeom-Oh Kim

发明人： Young-Keun Lee ,  Gi-Cheri Kim ,  Byung-Choon Yang ,  Jeom-Oh Kim

IPC分类号： G09G3/36

CPC分类号： G09G3/3406 ,  G09G2320/064 ,  G09G2320/0646

摘要： A backlight unit assembly, a liquid crystal display having the same, and a dimming method thereof are provided. The dimming method for a liquid crystal display includes setting a plurality of lookup tables, each lookup table having different data for adjusting luminance corresponding to a same grayscale, calculating a grayscale average of a whole liquid crystal display panel and grayscale averages of individual liquid crystal display panel blocks with respect to an image signal input to the liquid crystal display panel, selecting one of the plurality of lookup tables in accordance with the whole grayscale average, and calculating the data for obtaining the luminance corresponding to the individual grayscale averages in the selected lookup table, and adjusting and applying power to a light emitting diode assembly using the calculated data. In the case of displaying an image, which is dark on the whole and only a part of which is bright, power is applied with a wider pulse width at the same grayscale, and thus the image can be displayed with a desired luminance to minimize image distortion.

公开(公告)号：US20080239754A1

公开(公告)日：2008-10-02

申请号：US12043318

申请日：2008-03-06

申请人： Seok-Won Kang ,  Jeom-Oh Kim ,  Eun-Jeong Kang

发明人： Seok-Won Kang ,  Jeom-Oh Kim ,  Eun-Jeong Kang

IPC分类号： F21V7/04 ,  H01J9/00

CPC分类号： G02B6/0091 ,  G02B6/0073 ,  G02B6/0085 ,  G02B6/0093

摘要： A backlight assembly, a display apparatus and a method for manufacturing the backlight assembly. The backlight assembly includes a light-guide plate, a point light source unit, a fixing plate and a cover. The point light source unit includes at least one point light source disposed at a side of the light-guide plate, and a flexible printed circuit board (FPC) disposed under the light-guide plate and having the point light source. The fixing plate is disposed under the FPC and has at least one first combining member. The cover is disposed under the fixing plate and has a first surface on which at least one second combining member is formed. The first and second combining members are combined with each other. Thus, assembling time may be decreased, heat may be efficiently dissipated, and manufacturing costs may be decreased.

摘要翻译： 背光组件，显示装置和制造背光组件的方法。 背光组件包括导光板，点光源单元，固定板和盖。 点光源单元包括设置在导光板一侧的至少一个点光源和设置在导光板下方并具有点光源的柔性印刷电路板（FPC）。 固定板设置在FPC下方，并具有至少一个第一组合构件。 所述盖设置在所述固定板的下方，并且具有形成有至少一个第二组合构件的第一表面。 第一和第二组合构件彼此组合。 因此，可以减少组装时间，可以有效地消散热量，降低制造成本。

公开(公告)号：US08552964B2

公开(公告)日：2013-10-08

申请号：US11931028

申请日：2007-10-31

申请人： Gi-Cherl Kim ,  Moon-Hwan Chang ,  Jeom-Oh Kim

发明人： Gi-Cherl Kim ,  Moon-Hwan Chang ,  Jeom-Oh Kim

IPC分类号： G09G3/36 ,  G09G5/10 ,  G05F1/00

CPC分类号： H05B33/0857 ,  G09G3/3426 ,  G09G2320/064 ,  G09G2320/066 ,  G09G2330/021 ,  G09G2360/16 ,  H05B33/0818

摘要： A plurality of point-light sources emits light, based on an image displayed on a display panel. A substrate has the point-light sources disposed thereon. A power-controlling section provides the point-light sources with first driving current having a pulse current with a pulse modulation duty less than or equal to a maximum pulse modulation duty cycle and a first amplitude in accordance with a normal image. A power-controlling section provides the point-light sources with second driving current having a pulse current with the maximum pulse modulation duty cycle and first boosting amplitude greater than the first amplitude in accordance with a high luminance image. Thus, the quantity of emitted light of the point-light sources may be adjusted in accordance with the position of an image displayed in a display panel, and the point-light sources that correspond to high luminance images may be boosted up.

摘要翻译： 多个点光源基于显示面板上显示的图像发光。 基板上设置有点光源。 功率控制部分为点光源提供具有脉冲电流的第一驱动电流，脉冲调制占空比小于或等于最大脉冲调制占空比，并且根据正常图像具有第一幅度。 功率控制部分根据高亮度图像向点光源提供具有最大脉冲调制占空比的脉冲电流和大于第一幅度的第一升压幅度的第二驱动电流。 因此，可以根据显示面板中显示的图像的位置来调整点光源的发射光量，并且可以提高与高亮度图像相对应的点光源。

公开(公告)号：US20090135128A1

公开(公告)日：2009-05-28

申请号：US12276018

申请日：2008-11-21

申请人： Eun-Chae JEON ,  Si-Joon Song ,  Jeom-Oh Kim

发明人： Eun-Chae JEON ,  Si-Joon Song ,  Jeom-Oh Kim

IPC分类号： G09G3/36

CPC分类号： G09G3/342 ,  G09G2310/0237 ,  G09G2320/0257 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2320/0666

摘要： In accordance with embodiments of the present disclosure, a backlight unit assembly is provided with a lamp and a light emitting diode (LED) periodically turned on and off, and a liquid crystal display having the backlight unit assembly. A light source is configured with both the lamp and the LED, and the LED is periodically turned on and off by applying a start signal, which are capable of removing image sticking on a liquid crystal display (LCD) panel. This feature may reduce power consumption and increase contrast ratio. The backlight unit assembly and the LCD are capable of adjusting a chromaticity coordinate of the light source to a reference chromaticity coordinate.

摘要翻译： 根据本公开的实施例，背光单元组件设置有周期性地打开和关闭的灯和发光二极管（LED），以及具有背光单元组件的液晶显示器。 光源配置有灯和LED，并且通过施加能够去除液晶显示器（LCD）面板上的图像残留的启动信号来周期性地打开和关闭LED。 该功能可以降低功耗并增加对比度。 背光单元组件和LCD能够将光源的色度坐标调整为参考色度坐标。